2015 Forest River SOLERA 24R 2015 SOLERA 24R CLASS C - MOTORHOME BY FOREST RIVER Built on the Mercedes Benz Chassis you'll be amazed by not only the cabin comfort but also the estimated 18 mpg fuel efficiency of the Mercedes Turbo Diesel. the 24R has the extra rear slide (compared to the 25S model) to give you more room in the rear queen bedroom. RV - Class C Class C 6873 PSN . Industry leading headroom & storage; sleep 4-6 in the bunk over the cab and rear bed 50x80 and the optional sofa/sleeper in place of the dinette/sleeper. This is just a great compact every-space-used-wisely unit; its easy to drive easy to maneuver...